//如果第1个字母是q，程序调用strcpy()zzzzzzzzzzzzzzzzzzzzzzzzzz
#include<stdio.h>
#include<string.h>
#define SIZE 40
#define LIM 5
char * s_gets(char * st, int n);
int main()
{
    char qwords[LIM][SIZE];
    char temp[SIZE];
    int i=0;

    printf("Enter %d words beginning with q:\n", LIM);
    while(i<LIM && s_gets(temp, SIZE))
    {
        if(temp[0]!='q')
            printf("%s doesn't begin with q!\n", temp);
        else{
            strcpy(qwords[i], temp);
            i++;
        }
    }
    puts("Here are the words accepted:");
    for(i=0; i<LIM; i++)
        puts(qwords[i]);

    return 0;
}

char * s_gets(char * st, int n)
{
    char * ret_val;
    int i=0;

    ret_val=fgets(st, n, stdin);
    if(ret_val)
    {
        while(st[i]!='\n' && st[i]!='\0')
            i++;
        if(st[i]=='\n')
            st[i]='\0';
        else 
            while(getchar()!='\n')
                continue;
    }
    return ret_val;
}